Ventilating apparatus



Patented Dec. 18, 1928.

* UNITED STATES.

A, 1,695,804 ENT OFFICE.

PAT

ALLEN rA. EINBERG, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR. TO ARCTIC NU-AIR CORPORATION, OF CHICAGO, ILLINOIS, A lCORPORATION OFVILLINOIS.

i VENTILATING APPARATUS.

Application led June 2,

This invention relates to improvements in Ventilating apparatus and it consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The primary object of the invention is to provide an improved combination' exhausting and blowin casing-adapted for attach. ment tothel neck of a blower whereby certain advantages later to appear are attainable. 1

Another object of the invention is to provide such a casing having a plurality of mouths and including a plurality of dampers so arranged that either mouth may be employed as a discharge mouth and one may be employed as an exhaust mouth when the other is employed as the discharge'.

The 'above mentioned objects of the invention as welllas others, together withfthe many advantages thereofl will more fully' appear as I proceed with my specification.v

In the drawings: j

Fig. 1 is a horizontal plan sectional view through a typical blower room of a theatre in which is embodied one form of my invention. c i .Y

Fig. 2 is a perspective view of a certain discharge mouth casing embodied in my 1mproved apparatusj y A i Y Referring now in detail to that embodiment of the invention illustrated in 'the accompanying drawing, 1 indicates one of the side walls of a theatre building, 2 indicates the rearl wall thereof, 3 indicates a wall at the frontof the stage 4 and 5 indicates a wall parallel with the side wall and connecting the .rear and stage walls. 'The variousL walls define a normally closed compartmentV 6 which is commonly termed blower room in which is located a Ventilating apparatus 7 access being had to said room from the stage` through a door and doorway 8. y

In the stage wall 3 isprovided al rectangular opening 9 connecting the blower room 6 with t-he auditorium 10 of the theatre and in said opening is arranged a pluralityl Vof Vlouver like deecting blades 11." In the side wall .l near the stage wall and in the rear wall opposite the *openingy 9 in the stage wall 3 are provided rectangular openings 12 and 13 respectively. The two 'last men# tioned openings'have louvers 12a fand 13L respectively by whichy they may be closed against the passage of air therethrough when so desired. v

opening.

1927. y Serial No. 195,955.

In the blower room and restingon the Hoor thereof is a blower casing 14 arranged parallel with the side wall in the plane of the opening 9 in the stage wall',-said casing having a neck 15 extendingtoward said In said casing which hasthe usual side inlets, is a fan (not shown)` driven by a motor 16 at the rear of the casing.

Between the neck of the blower casing 14 and the stage wall I interpose a casing 17 of peculiar construction which in effect forms a continuation of said neck. .Said casing is rectangular in both planl and cross section and includes top and bottom walls 18 and 1 9and side walls 2O and 21 respectively, thus yleaving the casing open atV both of its. ends 17a-17b respectively. In the side wall 2O is provided a short lateral open extension 22 and in the other side wallis provided an opening 23 of the same length and area as that of the extensionjust mentioned, and said areas approximate thev cross sectional area of the open ends of theV casing which in turn A approximate that. of the blowerneck. y

The open rear end 17h of theV casing is y herein shown as connected by a flexible canvas duct 24 to the blower casing neck 15 while the front end of the casing is shown as directly connected by angangle bar 25V to theopening 9 in the stage wall 3. lateral vextension 22 is shown. as connected by a canvas duct 26 to the opening 12 inl the building wall 1. The connections described areto be considered as illustrative only so that other connections suitable to the installation to be made,gmay be employed in The their stead without departing from the spirit of the invention.

In the casing I provide a plurality of coacting movable dampers 27 and 28 respectively,` so arranged that 'when they are in one limitof their movements, they willclose off the opening 23 in the side wall'20 and theopening fof said extension 22 so as to leave the 'casing open from end to end, and when they are inthe other limit of their movement, their ends extend diagonally of the casing in overlapping relation 'to close the casing and connect the rear end thereof with the lateral extension.- 'Ihe damper 27 is fixed to a rod 27a pivoted in the top and bottom walls of the casing near the side wall 21 at the forward end lof the lateral exten` sion 22, while the other damper is fixed to a dampers in one direction.` A spring 33 lined vat 'one end to the arm 30 and at the other end to the top wall of the casing normally acts to hold the dampers in a position parallel with the side walls of the casing and a. cord 34 is fixed toV said arm 39 by which said arms may be actuated against the spring from a remote control station or place within or without said room.

The operation is as follows: Assume that it is desired to blow fresh out ide air into the theatre auditorium. Vf ith the blower in operation, the louvers 13a in the opening 13 would be arranged to permit a passe je of air therethrough and the dempers 2'? 2 wouldlbe in the full line position shown in -Fig. 1 whereinl they are parallel with the side walls of the casing and close off the opennig 23 Vand lat-eral extension 22. tir wouldthen passinto the blower room and into the side inlets of the blower and rout through the neck 15, and casingl'if' and through the'opening 9 into the auditorium. To exhaust'air from the auditorium and discharge it to atmosphere, the opening i? is Alf closed and the dampers swung` into the over-l lapping diagonal position up the stop pins 32. rlhus air is drawn from the auditorium through the opening 9 inthe wall into the casing 17 where itpasses through the opening 23 into the room 6. From this room it enters the inlets of the blower and passes to the neck 15 and from there into the rear end of the casing where the dampers act to direct the same Vthrough the lateral extension 22 and through the opening 12, to the atmosphere. l'llhus the casing permits either the blowing in of fresh air to the auditorium or the exhausting of stale air therefrom. The apparatus is simple in construction and may be readily installed in place. 1t is noiseless and includes but a few movable parts which cannot readily get out of order. .Y

While in describing my invention, l have referred in detail to the form and arrangement of the parts thereof', the same is to be considered as illustrative only so that I do not wish to be limited thereto'except as may be pointed out in the appended claims.

l claim as my invention:

1. In combination with building walls deln lthe bottom and top wall of the fining a compartment and having apertures therein, one leading yto a room to be ventilated and other being closahle and leading to atmosphere, a blower in said compartment and lhaving a discharge neck, tubular.

tinuation or to connect said eiztension'only with said neck through said continuation.

2. An apparatus of the kind described embodying therein a4 casing open at opposite .endsand having openings in itsfsides a pairof dampers in said casing, arranged to swing from a position parallel with .said sides to close the-openings therein, to a position extending` diagonally of the casing, to connect one end of they casing with one opening and the other end ofthe casing with the other opening.

3.l An apparatus of the kind described einbodying therein a casing'openat opposite ends, and having openings in its sides, a pair of dampers in said casing, arranged to swing froma position parallel with said sides' to close the openings therein to a position extending diagonally of the casing` wherein associated ends overlap one another and act to connect one end of said easing` i to the opening in one side thereof and con neet the other end of said casing with said opening vin theother side ,of said casing.

l. Anapparatus of the kind describedv embodying therein a casing open at opposite ends and having openings in its sides, pair of dampersV one normally arranged parallel with each side and closingv the opening therein, and capable of being swung into overlapping relation in a piane extending diagonally of they casing and means in said casing adapted to be engaged byv said dampers to limit their positions in saidv overlapping relation. i f

5.A Ana A paratusof the kind described em bodying t erein a tubular casing open at its ends and having an' opening in one side and a l teral tubular extension ontheother side, a damperl pivoted in said casing near one end of said opening in said one side and a secondL damper pivoted in saidjcasing if near the diagonally opposite end of ,said-extension, said dampers normally closing saidopening and extension and capable of swinging to ward each other into substantially the same planete connectsaid lateral extension with one end of said casing.

In testimony whereof, l have hereunto set my hand, this 20th day of May,A 192' ALLENV A.l FEINBERGL 

